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	<title>上下</title>
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<body >
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		<header class="ys_banner">		
			<a href="https://www.ywart.com/login" class="ys_a"><input type="submit" value="创建账号"  class="ys_input1"></a>
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			<input type="text" placeholder="搜索艺术家或艺术品" class="ys_input3">
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		<footer class="ys_footer">
			<ul class="ys_footer2">
				<a href="">
					<li>购艺术</li>
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					<li>造艺</li>
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					<li>藏艺术</li>
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					<li>数字美术馆</li>
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			<div class="menu"> <span class="menu_span1 f_left">购艺术</span> <span class="menu_span2 f_right">▲</span></div>
			
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					<li class="ys_img3"  onclick="screen()"><div>筛选</div></li>
					<li class="ys_img4"><a href="">购物车</a></li>
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